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Product Quality and Safety

Product R&D and Approval Risk Management

We endeavor to prevent quality issues by engaging in risk management activities for reducing quality risks at Group companies both in Japan and overseas, in order to prevent quality risks from materializing.
So as to ensure that delivery time and cost are not prioritized over quality, we have established the order of priority for decision making in the performance of duties as SCQDE*1. By repeatedly informing and educating employees, we are fostering an environment that will prevent hesitation in judgment. The same concept is applied in product R&D, and is fundamental to all decisions that require problem solving or response to potential risks.We have also established front-loading system guidelines, whereby the design,R&D, manufacturing, quality assurance, research and sales departments identify risks and problems that may be considered during production or mass production, and deliberate on improvements and measures. Expert reviews and customer evaluations are conducted at each stage of the design and prototyping, and proper execution of new businesses is ensured by approval before the transition to mass production.

  • *1 SCQDE” shows the order of priority of our business decisions. In providing products and services to customers, we must thoroughly implement SCQ and satisfy D. We believe that we will be able to obtain trust from customers and society by continuously executing SCQD in good faith, and this will produce a reasonable profit.
    1. S (Safety & Health: safety and health come first)
    2. C (Compliance & Environment: legal compliance, fair activities and environmental conservation)
    3. Q (Quality: quality of products and services provided to our customers)
    4. D (Delivery: strict adherence to delivery deadlines)
    5. E (Earnings: appropriate earnings
    With reflection on quality Issues, we prioritize adherence to SCQ.
    The trust of customers is secured only when all requirements up to and including D have been satisfied.E is obtained based on the trust of customers after satisfying SCQD.

Product Safety

As a manufacturer, we are committed to providing our customers with safe, high quality products. We therefore implement a range of quality and safety initiatives, as a precautionary approach and to ensure compliance with the law and other applicable regulations. We have also developed a set of regulations for the control of hazardous chemical substances contained in our products. As well as ensuring that we do not release any products containing hazardous substances to customers, including via group companies, we are committed to disclosing product information when deemed necessary.

Ensuring Safety in Transit

We make every effort to guarantee safety when transporting products that require additional safety measures in transit, such as sulfuric acid. Specific measures include ➀ avoiding contact with other substances, ➁ using protective equipment when loading and unloading products, ➂ preventing leaks or dispersal from containers, and ➃ providing drivers with SDS clearly outlining measures in the event of an accident.

Providing Safety Information

Providing safety information on our own products is vitally important, to ensure product safety further along the supply chain. We therefore attach Safety Data Sheet (SDS) to Mitsubishi Materials products so as to effectively disclose and convey information on chemical substances.

Controls on Chemical Substances Contained in our Products

We have formulated a set of regulations for the control of hazardous chemical substances contained in our products, and continue to reinforce management and ensure legal compliance in relation to chemical substances contained in our products. We register, maintain and manage chemical substances based on the Revised Chemical Substances Control Law*2 We successfully completed the registration of substances covered under REACH regulations*3 by September 2017, and currently maintain and manage those substances. We are also gathering information on and responding to chemical-related laws and regulations in other countries as needed.
We provide Group companies with the latest information through quality liaison conferences and quality meetings, and give them advice on compliance with all applicable legislation.

  • *2 Revised Chemical Substances Control Law: Act on the Partial Revision of the Act on the Evaluation of Chemical Substances and Regulation of Their Manufacture, etc.
  • *3 REACH (Registration, Evaluation, Authorization and Restriction of Chemicals): EU regulation that governs the registration, evaluation, authorization and restriction of chemical substances manufactured within or imported into the EU.

Impact Assessments at the Development and Prototype Stages

We carry out a review during R&D at four key stages, when exploring areas of R&D, conducting R&D and trial production, conducting mass production trials, and commercializing products. We repeatedly confirm and meticulously examine all of our products from the very beginning, including checking for the use of hazardous chemical substances, guaranteeing that products meet customers’ requirements and ensuring legal compliance, always taking into consideration the safety of products and processes as we engage in development works.


Quality Management and Group-wide Quality Initiatives

Establishment of Quality Review Day

The Group has declared November 1 to be our Group-wide Quality Review Day so that the quality issues that occurred in 2017 will not be forgotten and the same issue will not occur again.
In fiscal 2022, this is an opportunity to review quality issues by watching a video message from the President and a video of lessons learned from the series of quality issues. It is also an opportunity to verify that the products and services provided to customers at each site do not have quality issues.
We have also implemented various initiatives, including the verification of the effectiveness of the measures for preventing the recurrence of complaints, and a review of the standards and procedures.

Quality Management Strategy

We operate in accordance with the “Fundamental Quality Provisions at Mitsubishi Materials Group” in order to enhance governance relating to quality. Under the quality provisions, we have established a Group-wide "Quality Policy" that aims to provide first-class products and to obtain customer satisfaction, and established and operate the "Quality Control Guidelines at Mitsubishi Materials Group" to complement the Group Quality Policy. We have established and are striving to maintain our quality management, from design and development to production, shipping and sales, for all organizations involved in quality improvement of products and services provided by us.

We handle a wide variety of products at the domestic and overseas sites of our Group companies, and it is important to share the information related to quality management.
At this meeting, Professional CoE's Safety, Environment & Quality Dept. provides and shares the variety of up-to-date information about our quality. Participants can then share examples of improvement at each site and hold group discussions on specific topics.
The purpose is to deepen the understanding of quality representatives and bring back the shared information and the outcomes from discussion to each site to enable further improvements.

We have also set up a Quality Liaison Conference comprised of the persons in charge of quality from Professional CoE's Safety, Environment & Quality Dept., each in-house company, and others, in our efforts to enhance our governance system.
At the quality liaison conference, the progress and status of quality training, quality audits, the automation of testing equipment, and quality initiatives at each in-house company, including Group companies, are reported. The necessary information is then shared by participants.

Further, where necessary, we hold quality meetings that are aimed at sharing quality information. At quality meetings, we provide detailed support to each site, such as checking and discussing the situation of quality management, etc., individually with quality person in charge of the sites. The Quality Audits as a part of the Theme Audits led by the Internal Audit Dept. are conducted. The purpose of the quality audit is to confirm by objective evidence that there is no quality fraud and that effective quality management is implemented. It also aims to identify issues and improvements related to quality, and to provide an opportunity for the audited sites to make continuous improvements.

Quality Training

Given the reflection that Group-wide crisis sharing was not working with a poor sense of ownership when the quality issues occurred, quality training is conducted for each level of younger employees, middle employees and managers, to continue to change their mindset on quality.The quality management system (QMS) based on ISO 9001 is fundamental to our quality management and quality assurance.
ISO9001 internal auditor training is conducted regularly for newly appointed auditors.
In fiscal 2022, nine classes were held with a total of 150 participants. In addition to this, we also held seven classes aimed at maintaining and improving the auditing skill and capabilities for the experienced internal auditors. A total of 61 people participated in these classes.

Quality Management Initiatives at Overseas Manufacturing Sites

Our Metalworking Solutions Company has 10 manufacturing sites in Europe, the United States and Asia, which manufacture high quality products in conjunction with our domestic sites.
To accommodate the expansion of locally manufactured products overseas, we have continued efforts to provide technical instructions from domestic sites on equipment maintenance, production technologies, inspection standard and other matters.
This initiative over a number of years has resulted in spontaneous activities by local employees overseas, e.g. kaizen (improvement) meetings and reviews of QC systems. Their motivation to acquire new skills and technologies is driving improvements in quality. We engage in activities to improve quality, such as the raising of quality awareness and the improvement of quality documents through ongoing quality training.
Also, electronic components business, a part of Advanced Products Company, was expanded to Southeast Asia early and has transferred the production to the region.
Today, in Southeast Asia, we have a total of five manufacturing sites of subsidiaries and subcontractors dedicated to the business, and have worked closely with the Ceramics plant in Japan as the “mother plant” to develop a business scheme.
The Copper & Copper Alloy Div., too, has a total of 12 sites in Europe, the United States and Asia, and is working to maintain and improve the level of quality management by enhancing an alliance with Japanese sites and head office.
In particular, to reduce customer complaints about product quality and maintain governance, we encourage the sharing of information and conduct multifaceted activities aimed at further raising awareness and improving the abilities of local staff and personnel posted overseas, including Advanced Products Company quality supervisor meetings, small group activities and presentation meetings, quality audits conducted by the in-house company, and web conferences held on a timely basis.

Governance Restructure Relating to Quality Management and Preventive Measures

As the result of efforts to implement and strengthen prevention measures for recurrence within the Group’s quality management, we have improved both quality awareness and control level across the Group and various measures have been disseminated across the Group. To prevent the recurrence of quality issues going forward, we will incorporate a series of measures to prevent quality issues into our quality management systems such as the systems that comply with the ISO 9001 standard, and continuously implement them.